• Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
    Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.

1000w was not enough for a 5090

W

Wag

[H]ard|Gawd
Joined
Aug 29, 2006
Messages
1,583
I recently replaced my 9070xt with a Asus Tuf 5090 and was getting regular spontaneous power-downs during gameplay. I was using a Ventroo 1000w ATX 3.0 PSU (using a 12pin cable). Supposedly a decent ps but it just couldn't hack it. It's not like my machine is overloaded, I have a 7900x with a few nvmes, that's pretty much it.

Luckily I had a brand new EVGA 1300 GT PS sitting around from a trade in I did a couple of years back- seems to be good for the moment. I ran Flight Sim 2024 maxed out for a while.

So I assume that even though Nvidia says a 1000w PS should be enough for a 5090, I suppose the transient power spikes could go well over that?
 
Celcius said:
I've never heard of Ventroo but even nvidia themselves recommends 1000w
Click to expand...
Sorry, it's Vetroo, not Ventroo.

They're a lesser known brand of aftermarket peripherals,, their power supplies are made by some of the better known manufacturers like Sparkle. The older ATX 3.0 1000w one I had reviewed well but apparently even that wasn't enough. The EVGA one I have did retail for almost double the price.

If I start getting shutdowns again it could quite possibly be the power in my building, which is over 100yrs old. I am using a true sinewave ups so power spikes shouldn't be an issue but I've noticed the voltage in my building isn't all that consistent.
 
Last edited:
Wag said:
Sorry, it's Vetroo, not Ventroo.

They're a lesser known brand of aftermarket peripherals,, their power supplies are made by some of the better known manufacturers like Sparkle. The older ATX 3.0 1000w one I had reviewed well but apparently even that wasn't enough. The EVGA one I have did retail for almost double the price.

If I start getting shutdowns again it could quite possibly be the power in my building, which is over 100yrs old. I am using a true sinewave ups so power spikes shouldn't be an issue but I've noticed the voltage in my building isn't all that consistent.
Click to expand...
Never heard of that one either.
 
My Corsair RMX 1000x 2021 with direct 2 x PSU 8 pin to 12vhpwr cable seems to be doing just fine, also handled the 4090 for a couple of years without issue. 9800X3D with a shit ton of storage here.
 
KickAssCop said:
I keep telling people to not use 1000 w PSUs but get flamed every single time so I stopped saying it until now.
I have been running a 1300w psu since 2015 and most recently changed it to an ATX 3.1 1200w. I think I am good for now.
Click to expand...
Yeah, I had a really solid 1200w EVGA I used for a decade then it started squealing- they recalled them all and replaced it for like $50 for a new 1300GT. Would have been nice if they gave me a G2 instead but whatever.

I will say the 12pin to 4 separate 8 pin adapter is a mess. I have a big case and the cables are still jammed in against the side panel.
 
AVATARAT said:
An easy way to check if the problem is coming from the power supply is to simply reduce the power limit on your 5090 by ~10% (or more).
If the shutdown continues, then the problem is likely coming from some other device.
Click to expand...
I'm pretty sure it was the PS- the 9070xt I was using had no problems.
 
vegeta535 said:
The 5090 is a completely different beast compared to the 9070xt. You talking about nearly 300w difference and Nvidia cards are know for huge spikes that older PSU can not handle properly.
Click to expand...
Right, that's why I said it was probably the PSU.

Edit- Definitely was the PSU. Been playing Cyberpunk pretty much maxed out for the last 2 days, no problems.
 
Last edited:
Wag said:
Sorry, it's Vetroo, not Ventroo.

They're a lesser known brand of aftermarket peripherals,, their power supplies are made by some of the better known manufacturers like Sparkle. The older ATX 3.0 1000w one I had reviewed well but apparently even that wasn't enough. The EVGA one I have did retail for almost double the price.

If I start getting shutdowns again it could quite possibly be the power in my building, which is over 100yrs old. I am using a true sinewave ups so power spikes shouldn't be an issue but I've noticed the voltage in my building isn't all that consistent.
Click to expand...
The OEM for Vetroo is Andyson, which I have never heard of before.

https://www.made-in-china.com/showroom/tinapcpowersupply/
https://www.overclock.net/threads/andyson-power-supplies-information-thread.1587607/
 
Armenius said:
The OEM for Vetroo is Andyson, which I have never heard of before.
Click to expand...
The reseller can actually matter more than the ODM with PSUs. Good ODMs can produce shit PSUs at the behest of bad resellers. Basically an ODM like Seasonic or CWT will make a design for a PSU but then the reseller gets to come in and customize it. They can swap out components for better ones, they can be conservative on the ratings (like CWT says it is a 550w units but they mark it as 500w) and so on. They can also go the other way and cost that shit down, use the cheapest components, remove items until it stops working and then undo the last change (that is literally a thing that is done in cheap device design) and make a POS that barely functions.

So while I do pay attention to the ODM of a PSU, I'm actually more interested in the company who puts their name on it because they are the ones who make the final choices as to what goes in it, and they are the ones who stand behind the ratings, or don't.

Now personally, I buy from Seasonic so one is the other, they both are designing the PSU and choosing the final kit out. That combined with buying a high end unit, I'm pretty sure I'd be fine with a 5090 (I have a 4090 at the moment). I think my Prime TX-1000 Titanium PSU would have no issues with the demands of a 5090 because it really has no issues throwing out its full 1000w all the time.
 
The Vetroo GV1000 PSU is decent. I run one in my system. Any 5090 will need a 1250w + to handle transient load spikes depending on the model. I have no issues with mine but I have never ran over a 4080 super/7900 XTX on mine. Yes, its an Andyson built with a knockoff Seasonic architecture with all Japenese Caps. I wouldn't recommend it over 850w of hardware due to the sensitive protections in place. At least it will not kill your hardware but you do need to upgrade to a 1250 to run that 5090 stable.

EDIT: I did run mine with a 5070ti and if you have the ATX 3.0 version of the unit, I noticed if you slightly wiggled the cable on the 12vhpr cable, it would black screen immediately. The cable quality is just not up to Seasonic quality so this is another reason to switch. I just had to wiggle my 24pin cable to boost my voltages which points to a cable quality issue as well.

Any mid to high 5000 GPU you should be using ATX 3.1 specification.
 
Last edited:
vegeta535 said:
The 5090 is a completely different beast compared to the 9070xt. You talking about nearly 300w difference and Nvidia cards are know for huge spikes that older PSU can not handle properly.
Click to expand...
It's not an old PSU but it will not reliably supply power over 1000w especially when you consider transient load spikes due to the protections set too conservative. It's a very compact PSU. 130mm in length. This PSU is a SOLID 850w unit IMO.
 
I also should add two things to consider with regards to PSU wattages:

1) A good PSU should be able to handle transients so long as the sustained wattage is at or below their recommended rating. All power systems should be designed to do that. Momentary demands going over what a circuit or PSU is nominally rated for is normal and part of the spec. Your 15A breakers aren't going to trip when your vacuum cleaner draws 30a to start its motor (which cheap ones will totally do).

2) A 1300-watt PSU might be a solution for PSUs that aren't good at transient handling and thus you aren't really using its power but be careful getting one thinking you can actually get 1300 watts out of it. Unless you have a 240v circuit or a 20a circuit, no you really can't. Remember that the rating on a PSU is the DC power rating, and they have efficiency loss so it takes more AC power to produce that DC power. If your PSU is outputting 1300 watts DC and it is 80 Plus Titanium you are probably getting about 90% efficiency meaning you are drawing about 1440 watts at the wall. That is absolutely maxing out a 15a circuit for continuous draw (only 80% of rated capacity is permissible for a long term draw, meaning 12amps) and then only if your voltage isn't sagging and you are getting 120v. If you have a cheaper unit like a Gold you are going to be up around 1500 watts draw. Add in anything else like monitors and such, and you are going to drop the breaker at some point. You notice that on those 1300 and 1600 watt models they have a different connector on them? Ya well that's a 16 amp connector. You can find cheater cables that go from a NEMA 5-15 to the IEC C20 but they aren't supposed to. You should have a higher current (or voltage) outlet to support it.


When you get down to it, most people shouldn't really have more than a 1000-watt PSU because you probably don't have the electrical circuit to support the larger ones. Not only do you have other computer related things on it, but I'll bet like most houses there are multiple outlets on the same circuit and you have various other things hooked to it. If you don't want to drop your breaker, or worse have a fire if your breaker DOESN'T drop like it should, then don't overload it.

If you actually have a system that NEEDS more than 1000w, I'd run a 20a dedicated circuit or a 240v one. We may end up doing that in our computer room, depending on how much your shit we pack in here.
 
PSUs generally hit peak efficiency below 50% load, so oversizing a bit doesn't hurt anything except your wallet. The percentage difference in efficiency is generally small so you'll never make up the extra cost with higher efficiency. OTOH depending on what you're looking at it might be worth it for the noise levels. Larger, higher capacity units can generally deliver more power with the fan off or at lower fan speeds.

Future proofing a bit is also reasonable with PSUs. Unlike CPUs and vid cards the good ones come with 10+ year warranties and last through multiple builds. If you're young and just getting started, you're almost an empty nester, or otherwise expect to build a more power-hungry rig in a few years it might be worth dropping a few bucks extra now to avoid having to replace your PSU in your next build or the one after. It's a judgement call of course, and sometimes it's a gamble. Last time around I spent a bit extra to get a second 12v-2x6 connector. I do not trust NV not to cave on their one plug thing and allow 2 on a 6090 or 7090. If they'd allowed it on 5090s a bunch of them would have 2 plugs and AIBs would call it a safety feature. I also wouldn't be surprised if they released a 650-700W card. If they go too high I'll have to call an electrician and get another circuit put in, but I'll cross that bridge when I come to it.
 
Numbers are numbers, a system with a 5090 should pull well under 1000W, especially with an X3D chip. It should be 100% fine. If your PSU isn't actually running at its rated capacity, then:

  1. Maybe it's a crappy PSU
  2. Maybe it's a faulty PSU
  3. Maybe your 12VHPWR cable/adapter is faulty.
If none of those things are true 1KW should be just fine. Well I'm sure it's fine now either way. I have a pair of 1200W PSUs anyway, so I should be fine if I ever need to upgrade to a 5090 or similar. But frankly? I'm probably going to skip it entirely. 5070 Ti is performing just fine and my other GPUs are chugging away at Stable Diffusion shit without issue.
 
9950X3D and 5090 SUPRIM:

Current / Minimum / Maximum / Average

power_9950x3d_5090.png
 
Wag said:
I recently replaced my 9070xt with a Asus Tuf 5090 and was getting regular spontaneous power-downs during gameplay. I was using a Ventroo 1000w ATX 3.0 PSU (using a 12pin cable). Supposedly a decent ps but it just couldn't hack it. It's not like my machine is overloaded, I have a 7900x with a few nvmes, that's pretty much it.

Luckily I had a brand new EVGA 1300 GT PS sitting around from a trade in I did a couple of years back- seems to be good for the moment. I ran Flight Sim 2024 maxed out for a while.

So I assume that even though Nvidia says a 1000w PS should be enough for a 5090, I suppose the transient power spikes could go well over that?
Click to expand...
A lot of power supplies do not handle the transient spikes for cards like the 3090 on up. Total output of the unit is only part of the story. My 3090 killed an ASUS Thor 1200w and a Corsair 1200w. My Seasonic 1250w is the only one that lasted under that thing.
 
Corsair RM1000X ATX 3.1 PSU here, w/12v 2x6 connectors - zero issues with my 5090.
 
Rvenger said:
The Vetroo GV1000 PSU is decent. I run one in my system. Any 5090 will need a 1250w + to handle transient load spikes depending on the model. I have no issues with mine but I have never ran over a 4080 super/7900 XTX on mine. Yes, its an Andyson built with a knockoff Seasonic architecture with all Japenese Caps. I wouldn't recommend it over 850w of hardware due to the sensitive protections in place. At least it will not kill your hardware but you do need to upgrade to a 1250 to run that 5090 stable.

EDIT: I did run mine with a 5070ti and if you have the ATX 3.0 version of the unit, I noticed if you slightly wiggled the cable on the 12vhpr cable, it would black screen immediately. The cable quality is just not up to Seasonic quality so this is another reason to switch. I just had to wiggle my 24pin cable to boost my voltages which points to a cable quality issue as well.

Any mid to high 5000 GPU you should be using ATX 3.1 specification.
Click to expand...

It’s not decent. It’s sub-par. A decent 1kw PSU has no issues with 125% load spikes.

Granted a lot of “decent” psus prior to the 3090 didn’t, but that’s changed in the last few years.
 
WilyKit said:
It’s not decent. It’s sub-par. A decent 1kw PSU has no issues with 125% load spikes.

Granted a lot of “decent” psus prior to the 3090 didn’t, but that’s changed in the last few years.
Click to expand...
According to hardwarebusters its solid. One unit failing doesn't automatically mean it's a poor design.
 
i used to get laughed at over talking about these spikes...
1kw enough? no not always, kyle even had issues with the amd side.
 
pendragon1 said:
i used to get laughed at over talking about these spikes...
1kw enough? no not always, kyle even had issues with the amd side.
Click to expand...
In the four and a half years I ran that 3090 I killed two PSU's. Both north of 1,000w. To be fair, the Corsair AX1200 I had was two or three years old by that point. The ROG Thor 1200w wasn't though. It was brand new at the time. The thing is, they worked fine for anything other than Cyberpunk 2077. Using that game alone, GPU-Z logging would show that right at 347w the system would shut off completely like I had tripped a breaker. (Overcurrent protection kicking in.) The third PSU was a much newer Seasonic Platinum 1250w unit and that one still works and is running that same card currently.
 
pendragon1 said:
i used to get laughed at over talking about these spikes...
1kw enough? no not always, kyle even had issues with the amd side.
Click to expand...
When it all started Seasonic caught hell over it until they figured out what was causing it, then jacked up the OCP on evrrything they made going forward. It wasn't long before the rest followed suit. It still took a couple of years before PSU manufacturers caught up.
 
Last edited:
If anyone is buying new, the difference between 1000w and 1200w from Corsair is minimal. Like $50. A couple models are priced identically, although they're different designs. There's only $100 difference between 1000 and 1500. It doesn't apply if you're using something you already have, but if you're in the market for a new model you might as well go for it.
 
Eh. Current brand new EVGA 1300 GT PS is also having random shut downs- not as often as my previous PSU, but it's still happening.

I'm going to have to try to undervolt I guess.
 
Last edited:
Wag said:
Eh. Current brand new EVGA 1300 GT PS is also having random shut downs- not as often as my previous PSU, but it's still happening.

I'm going to have to try to undervolt I guess.
Click to expand...
Something else is wrong with your rig.
 
  • Like
Reactions: Niner
like this
Wag said:
Eh. Current brand new EVGA 1300 GT PS is also having random shut downs- not as often as my previous PSU, but it's still happening.

I'm going to have to try to undervolt I guess.
Click to expand...
Undervolting is not the solution. You need to figure out why your PSU is going into overcurrent protection mode. (Which is what it seems to be doing.)
 
thedream829 said:
My games have been crashing when I play very graphic intensive ones. Maybe it's my PSU...
Click to expand...
It very well could be. Easiest way to tell is to download GPU-Z and setup the logging on it. Play a game, induce a crash and then when you get the system back up, check the logs. You'll see where they end. It should end somewhere north of 550w on a 5090, 347 on a 3090, etc. Basically if it trucks along fine at certain power levels and then pulling a lot all at once kills it, then you have your answer.
 
Dan_D said:
Undervolting is not the solution. You need to figure out why your PSU is going into overcurrent protection mode. (Which is what it seems to be doing.)
Click to expand...
I'm not sure what else it could be- I'm not overheating and I didn't have this issue at all with the 9070xt. The only thing I can figure is that even this new PSU can't handle it. It doesn't happen very often- the last time it did I was playing Cyberpunk for a couple of hours and my setup shut down when I quit the game.

I don't have the kind of resources to keep throwing money at my setup.
 
Wag said:
I'm not sure what else it could be- I'm not overheating and I didn't have this issue at all with the 9070xt. The only thing I can figure is that even this new PSU can't handle it. It doesn't happen very often- the last time it did I was playing Cyberpunk for a couple of hours and my setup shut down when I quit the game.

I don't have the kind of resources to keep throwing money at my setup.
Click to expand...
follow what he said in the post above yours.
 
You must log in or register to reply here.
Back
Top